نتایج جستجو برای: ls 20118hto determine release risk of metals

تعداد نتایج: 21294146  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد علوم دارویی - پژوهشکده علوم 1392

purpose a metabolic abnormality such as obesity is a major obstacle in the maintenance of the human health system and causes various chronic diseases including type 2 diabetes, hypertension, cardiovascular diseases, as well as various cancers. this study was designed to summarize the recent scientific knowledge regarding the anti-obesity role of curcumin (diferuloylmethane), which is isolated f...

Journal: :iranian journal of toxicology 0
محمد ساکی زاده mohamad sakizadeh department of environmental sciences, shahid rajaee teacher training university, tehran, iran. روح الله میرزایی rouhollah mirzaei department of environmental sciences, university of kashan, kashan, iran.

background: in the current study,the hazard quotient, the hazard index (hi) and spatial variations of fe,mn,cu and cr in drinking water sources of andimesk-shush, khuzestan province, southern iranaquifer were assessed. methods: we compared theconcentrations of aforementioned heavy metals in wells and springs inandimeshk and shush regions. the non-carcinogenic risk assessment of heavy metals was...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: Street dust is considered as one of the important sources of particulate matters and heavy metals in the atmosphere. The goal of this study was to assess the heavy metals pollution in street dust of Tehran and evaluate their ecological risk. Materials and Methods: The sampling of street dust was carried out in two areas at the east and west of Tehran. After preparatio...

ژورنال: علوم آب و خاک 2019

High concentrations of heavy metals in street dust are considered to be a serious risk to the human health and the environment. In this study, 30 dust samples were collected from the pavements in the main streets of Abadan to determine the level of pollution of heavy metals in the street dust. Heavy metal concentrations were analyzed by inductively coupled spectroscopy (ICP-OES) method. The lev...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1393

asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...

Journal: :Mechanics of Materials 2021

This paper studies the lap shear, in which both adhesive and adherends are elastic, but is much softer than adherends. The shear lag model identifies a length, called length Ls. energy release rate of debond crack affected by elasticity Their relative importance characterized ratio remaining joint, L, to In short-joint limit, L/Ls→0, do not deform, gives rate. long-joint L/Ls→∞, interior does a...

Journal: :international journal of environmental research 0
m. aktaruzzaman department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh m.a.z. chowdhury agrochemical and environmental research division, institute of food and radiation biology, atomic energy research establishment, savar, dhaka-1349, bangladesh z. fardous agrochemical and environmental research division, institute of food and radiation biology, atomic energy research establishment, savar, dhaka-1349, bangladesh m.k. alam agrochemical and environmental research division, institute of food and radiation biology, atomic energy research establishment, savar, dhaka-1349, bangladesh m.s. hossain department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh a.n.m. fakhruddin department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh

pollution of water and soils by heavy metals is an emerging problem in industrialized countries.the present study was conducted to investigate the heavy metals concentration in water and sedimentsamples from ship breaking sites of sitakunda to assess the potential ecological risk posed by heavy metalusing different methods. heavy metals concentration was analyzed by atomic absorption spectrosco...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1372

in this study reference as one of the five cohesive devices in the achievement of textuality in english and persian narrative/descripitive written texts is focused on and analysed . to do so , the theoretical framework elaborated by halliday and hasan (1976) and its version adapted by the writer to match the sub-types of reference in farsi are applied to the analysis of reference in english and...

Journal: :Environmental Health Perspectives 2003
Aurelia Walczak-Drzewiecka Janina Wyczólkowska Jaroslaw Dastych

Upon contact with allergen, sensitized mast cells release highly active proinflammatory mediators. Allergen-mediated mast cell activation is an important mechanism in the pathogenesis of atopic asthma. Asthmatic patients are especially susceptible to air pollution. Epidemiologic studies found a positive correlation between severity of symptoms among asthmatic patients and the level of particula...

Background: Long-term treatment of rheumatoid arthritis (RA) with prednisolone (PRED) is associated with bone mineral density (BMD) loss. This study aimed to determine the status of BMD in non-compliant women who used PRED alone for RA. Methods: Non-adherent RA taking < 7.5 mg daily PRED without DMARDs for > 6 months, and RA patients taking methotrexate +PRED (RA control) were compared with ag...

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